The midi loop that automatically plays once on this page
is to test the pitchbend range used on your playback equipment.The track plays two consecutive notes:

On channel 1 it plays

Note no. (056) = G#2 with +4096 pitchbend units.

On channel 2 it plays

Note no. (057) = A2 with 0 pitchbend units

If you hear them as the same pitch, your system is interpreting
the midi pitchbend as 4096 units per semitone.If the pitch changes by one semitone (100 cents), then
it is being read or played without any pitchbend.